A nurse is preparing to administer diphenhydramine 25 mg/kg IM to a child who weighs 68 lb. Available is diphenhydramine Injection 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["15.4"]

To calculate the correct dose of diphenhydramine, we need to follow these steps:

Convert pounds to kilograms:
- 68 lb * 0.4536 kg/lb = 30.8 kg
Calculate the total dose in milligrams:
- 25 mg/kg * 30.8 kg = 770 mg
Determine the volume needed from the available concentration:
- 770 mg * (1 mL / 50 mg) = 15.4 mL

Therefore, the nurse should administer 15.4 mL of diphenhydramine.

Answer: 15.4 mL

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Correct Answer is ["2.5"]

Explanation

1. Determine the concentration per milliliter (mL):

Concentration (mg/mL) = 250 mg (from the available syrup) / 5 mL (from the available syrup)

Concentration (mg/mL) = 50 mg/mL

2. Calculate the volume to administer based on medication concentration and prescribed dosage:

Dosage (mg) = 125 mg (prescribed amount)

Concentration (mg/mL) = 50 mg/mL (as calculated above)

We can use the following formula to find the volume to administer:

Volume (mL) = Dosage (mg) / Concentration (mg/mL)

Volume (mL) = 125 mg / 50 mg/mL

3. Round the answer to the nearest tenth:

Volume (mL) = 2.5 mL (rounded to one decimal place)

Therefore, the nurse should administer 2.5 mL of valproic acid syrup.

A. mL B. OZ C. Mcg D. Lb.

Correct Answer is C

Explanation

A) mL: This abbreviation stands for milliliters, which is a metric unit of volume used to measure liquids. It is not a unit of weight, so it would not be identified as such when documenting in the medical record.

B) OZ: This abbreviation stands for ounces, which is a unit of weight used in the imperial system, not the metric system. It is important to distinguish between metric and imperial units for accurate documentation.

C) Mcg: This abbreviation stands for micrograms, which is a metric unit of weight. Micrograms are commonly used in the medical field to measure very small amounts of substances, such as medications. Recognizing this as a metric unit of weight is crucial for proper documentation.

D) Lb: This abbreviation stands for pounds, which is another unit of weight used in the imperial system. It is not a metric unit, so it should not be identified as such in the medical record.

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A nurse is preparing to administer diphenhydramine 25 mg/kg IM to a child who weighs 68 lb. Available is diphenhydramine Injection 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer valproic acid 125 mg PO. Available is valproic acid syrup 250 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["2.5"]

Explanation

A nurse is teaching a newly hired nurse about documentation in the medical record. Which of the following abbreviations should the newly hired nurse identify as a metric unit of weight?

Correct Answer is C

Explanation

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